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drm/i915/execlists: Microoptimise execlists_cancel_port_request()

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Just rearrange the code slightly to trim the number of iterations
required.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20170925124929.16974-1-chris@chris-wilson.co.uk
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
This commit is contained in:
Chris Wilson 2017-09-25 13:49:27 +01:00
parent 6b12ca569b
commit 3f9e6cd823
1 changed files with 10 additions and 7 deletions
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17
drivers/gpu/drm/i915/intel_lrc.c
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@ -571,14 +571,17 @@ done:
execlists_submit_ports(engine);
}
static void execlist_cancel_port_requests(struct intel_engine_execlists *execlists)
static void
execlist_cancel_port_requests(struct intel_engine_execlists *execlists)
{
unsigned int i;
struct execlist_port *port = execlists->port;
unsigned int num_ports = ARRAY_SIZE(execlists->port);
for (i = 0; i < ARRAY_SIZE(execlists->port); i++)
i915_gem_request_put(port_request(&execlists->port[i]));
memset(execlists->port, 0, sizeof(execlists->port));
while (num_ports-- && port_isset(port)) {
i915_gem_request_put(port_request(port));
memset(port, 0, sizeof(*port));
port++;
}
}
static void execlists_cancel_requests(struct intel_engine_cs *engine)
@ -625,7 +628,7 @@ static void execlists_cancel_requests(struct intel_engine_cs *engine)
execlists->queue = RB_ROOT;
execlists->first = NULL;
GEM_BUG_ON(port_isset(&execlists->port[0]));
GEM_BUG_ON(port_isset(execlists->port));
/*
* The port is checked prior to scheduling a tasklet, but